Ceiling Mount Chin Up W/ 4 cushioned grips Joist Rafter Mounted Pull Up HD Heavy Duty One Piece Welded Steel, other companies use a bolt to attach chin bar to frame Attaches securely to bottom of any joist, read our reviews, unique design others can't duplicate Extra Front Handles a comfortable 25" apart, other companies are 32" apart-Too Wide. Front and side handles have comfortable 1 5/8" grips. Middle bar has non- slip paint, no knurling Great to attach bands, rings, straps, ropes, without worrying about cutting or damage.